SEL SEL-2414 Transformer Automation Controller (TAC)

SEL-2414

Transformer Automation Controller (TAC)

Now Available With Load Tap Changer Controller Functionality

The SEL-2414 is a thermal and load tap changer (LTC) controller in one versatile, rugged device.

It supports a full range of monitoring and control solutions, including LTC control, transformer paralleling schemes, and cooling bank optimization.

Customize the device from a wide range of I/O cards and communications protocols to fit your needs.

Designed, manufactured, and tested in the United States, every SEL-2414 includes a ten-year, worldwide warranty and comes with no-cost technical support.

Regulate Voltage—Optimize transformer performance for power flow directions, seasonal variations, and demand fluctuations.

Select from time-based or inverse-time-based tap delays to control raise and lower commands. Maintain voltage stability and prevent equipment damage by using the tap-change limit and alarm capabilities.

SEL-2414

Prevent Transformer Overloading—Balance load across paralleled transformers using leader/follower or current angle schemes, including a configurable intertap delay.

Preconfigured settings make it easy to set up Ethernet-based paralleling schemes. Operators can adjust paralleling behavior, including switching the lead controller in paralleling schemes.

Optimize Thermal Management—Operate cooling stages by using transformer hotspot temperature calculations.

Exercise transformer cooling banks to eliminate unexpected maintenance events during critical load conditions.

Alternate fan banks to balance cooling duty cycles and increase the life of cooling systems.

Monitor Transformer Life—Track transformer loss of life using the IEEE C57.91-2011 or IEC 60076-7:2018 thermal model for various winding configurations (including three sets of single-phase transformers).

Directly measure ambient and top oil temperatures with a resistance temperature detector (RTD) or thermocouple input card. Monitor both digital and analog sensor outputs, such as oil level and pressure. In addition, through-fault monitoring tracks events that cause mechanical and thermal stress to transformers.

Increase System Awareness—Capture a broad range of data, including triggered oscillography, LTC event records, thermal records, and custom records.

The reports allow you to accurately trend transformer load and correlate the data with system parameters.

The controller provides basic metering, such as voltage and current measurements, maximum/minimum values, and demand and peak-demand values. Use the data to enhance asset management and plan for future expansion.

Modernize Your Transformer Controller—Specify the SEL-2414 with a new transformer installation, retrofit other OEM LTC controllers by using adapter plates and direct-replacement assemblies, or upgrade an existing controller by adding an LTC controller license.

For a complete turnkey solution, use the full engineering product support offered by SEL Engineering Services.

Displays

2-line × 16-character LCD—operating temperature –40° to +85° C (–40° to +185° F)

5-inch color touchscreen display, 800 × 480 pixels—operating temperature –40° to +70° C (–40° to +158°F)

Flexible I/O

The base unit includes three digital outputs and two digital inputs. There are four card slots for optional SELect I/O cards, including the following:

Serial communications (EIA-232/EIA-485)

8 analog inputs (AI)

8 digital inputs (DI)

14 DI

8 digital outputs (DO)—electromechanical (8 Form A; 8 Form B; 6 Form A, 2 Form B; or 2 Form A, 6 Form B)

4 DI, 3 DO (2 Form C, 1 Form B)—electromechanical

4 DI, 4 DO—electromechanical

4 DI, 4 DO—high-speed, fast high-current interrupting

4 AI, 4 analog outputs (AO)

3 ac voltage inputs

4 ac current inputs

3 ac current and 3 ac voltage inputs

4 ac current and 3 ac voltage inputs

10 RTD inputs

10 RTD/TC inputs

Upgrades and Retrofits

Purchase a software license to add transformer LTC control functionality to an existing SEL-2414.